GAS-TURBINE ENGINE BEHIND-COMPRESSOR SEALING DEVICE Russian patent published in 2002 - IPC

FIELD: mechanical engineering; gas-turbine engines; behind-compressor sealing devices. SUBSTANCE: proposed sealing device has labyrinth with sealing ribs connected with compressor shaft, mating segment cellular ring secured on compressor straightening device, and deflector forming slot-like space with ring. Slot-like space is connected at inlet with intermediate stage of compressor through U-shaped axially flexible manifold, variable- height slot before dispersing space and great number of holes in deflector whose axes are square to cooled surface of ring. Diameter of each hole is made increasing from variable-height slot to compressor disk. Great number of cellular segments are telescopically secured on flange of cellular ring. Each segment is fixed in circumferential and axial directions by means of bent off tip. EFFECT: improved efficiency of cooling and adjusting radial clearances of sealing device by jet uniform cooling of flange surface. 3 dwg